Orthoclase Feldspar (Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Amazonite
Microcline (KAlSi3O8) with lead inclusions
mineral
Banded Gneiss (with possible weathered sulfide or iron staining)
Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides
Metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Basalt
Mafic volcanic rock (various silicate minerals including Pyroxene and Plagioclase)
igneous
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Amazonite
K(AlSi3O8), Microcline (potassium feldspar)
mineral
Turquenite (Dyed Howlite)
Dyed Ca2B5SiO9(OH)5 (Calcium Borosilicate Hydroxide)
mineral
Fossilized Shark Teeth
Carcharhiniformes or Lamniformes species (common mineral: Fluorapatite/Ca5(PO4)3F)
sedimentary (fossilized organic matter)
Fluorite Tower
Fluorite (Calcium Fluoride - CaF2)
mineral
Sunstone
Aventurine Feldspar (Plagioclase Feldspar with inclusions)
mineral
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (extrusive volcanic rock with secondary mineral infilling)
igneous
Azurite-Malachite with Limonite
Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and organic impurities
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Felted Quartz / Chlorite Quartz
Chlorite included Quartz (SiO2 + (Mg,Fe)3(Si,Al)2O5(OH)4)
mineral
Quartz with Tourmaline Inclusions (Tourmalinated Quartz)
SiO2 with complex borosilicate inclusions
Mineral
Orthoclase Feldspar
Orthoclase (KAlSi₃O₈)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities and natural radiation
mineral
Biotite (Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Petrified Wood
Silicified Wood (SiO2 - Quartz/Chalcedony replacement)
Mineral / Fossil
Quartz (specifically Clear and Rose Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Tourmaline and Iron Oxides
Silicon Dioxide (SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Pink Granite
Granite (Phaneritic Quartz-Feldspar Rock)
igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Muscovite Mica (likely on Quartz/Feldspar)
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Amygdaloidal Basalt
Amygdaloidal Mafic Volcanic Rock
igneous
Coprolite
Coprolite
sedimentary
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Mica)
mineral
N/A (The provided image is a storyboard/digital document)
N/A
Obsidian
Volcanic Glass (70-75% SiO2 with MgO and Fe3O4)
igneous
Obsidian
Volcanic glass (Mainly SiO2)
igneous
Jet
Lignite (Anthracite-grade compact coal)
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous matrix
mineral
Mica-rich Schist fragment
Mica Schist
metamorphic